13. San Antonio, Texas
Late-1800s San Antonio was infamous for its unruly streets, where saloons, gambling dens, and brothels thrived. The city center frequently erupted in gunfights, and law enforcement struggled to keep the peace amid booming growth and restless newcomers. According to the Texas State Historical Association, San Antonio’s wild reputation set it apart from other Texas cities, marking it as a true frontier outpost of lawlessness and danger.
